let patch = init([])
let vnode = h('div#container.cls', 'Hello Snabbdom')
let app = document.querySelector('#app')
let oldVnode = patch(app, vnode)
vnode = h('div', 'Hello Snabbdom Again')
patch(oldVnode, vnode)
// vnode嵌套用数组就可以了
vnode = h('div#container', [h('h1', 'hello h1 again'), h('p', 'hello p again')])
